Logging device



PATENTBD FEB. ,2, 1904.

G. MOORE. LOGGING DEVICE. APPLICATION FILED SEPT. 23, 1903.

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No. 751,322. PATENTED/PEB. 2, 1904.-

G. MOORE.

LOGGING DEVICE.

APPLICATION FILED sin. 23, 1903.

N0 MODEL. 3 SiIEETEr-SHEET 2. I

THE NDHR}S PEYERS co. m-lmaumou WASHINGTON, n. c.

PATENTED FEB. 2, 1904;

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' no MODEL.

//v VEN 70/? Gearye Jare ATTORNEYS holdback-cable.

Patented February 2, 1904.

PATENT OFFICE.

GEORGE MOORE, OF MQNROE, WASHINGTON.

LOGGING DEVICE.

SPECIFICATION forming part of Letters Patent No. 751,322, dated February 2, 1904.

Application'filed September 23, 1903. Serial No. 174,316. (No model.)

To all whom it may concern;-

Be it known that I, GEORGE MOORE, a citizen of the United States, and a resident of Monroe, in the county of Snohomish and State of Washington, have invented anew and Improved Logging Device, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved logging device more especially designed for running logs down steep grades under perfect control of the operator without danger of injuring thelogs.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective view of the improvement as applied. Fig. 2is an enlarged side elevation of the brake mechanism for the Fig. 3 is an end View of the same. Fig. 4 is a perspective view of the connection of the cables with the logs. Fig. 5 is an enlarged perspective view of the clamp for the holdback-cable, and Fig. 6 is a perspective View of the coupling for connecting the ends of the cables with each other.

In transporting logs down a mountain side to the nearest watercourse it has heretofore been the practice to either carry the logs on cars traveling over a circuitous railroad-track or to run the logs down a steep chute or skidroad sometimes several miles in length. The

building and maintenance of a circuitous rail-- road is very expensive, and in sending the logs down a steep chute they gain such momentum, especially in wet weather when the chute is slippery, that thelogs dash one into the liable to pick up stones injurious to the saw in the mill. 1 With the improvement. presently to be described in detail the logs are sent'down the steepest parts of a chute or skid-road under perfect control of the operator and without danger of the logs being injured by-striking one the other or dashing with great velocity into the watercourse.

For the purpose mentioned the log or a pluralityof coupled logs A A (see Figs. 1 and 4) are connected with a pull-cable B and a holdchute or skid-road D to the end or landingthereof. At this point the holdback-cable C passes around a large sheave or a series of. flanged rollers H, attached to a frame set on the ground or fastened to a stump or other support, and the end of the holdback-cable then connects with the rear log or logs A. I In case the skid-road D has bends then suitable guide-pulleys are provided at the bends for guiding the cables.

As shown in Fig. 4, the holdbaclecable (l is provided at its terminal with a link C, adaptedto hook onto the hook I of a safetygrip I, attached to a log A in the usual ,manner, and the said cable, adjacent to the rear end of the rearmost log, is engaged by a clamp J, held on a tail-grip K, attached tothe rear end of therearmost log. The clamp J preferably consists of members J and J pivotally connected with each other and of which the member J is bent into U shape, and the,

member J extends into the member J to clamp the cable at the middle portion of the member J, as will be readily understood by reference to Fig. 5. Y

The upper end of the pull-cable B is provided with links B and B of which the link B hooks onto the hook L of a head-grip L,

connected with the forward end of the lowermost log A, as plainly indicated in Fig. 4.

If several logs are sent down at a time, then the said logs are coupled together by suitable grips or couplers N, as indicated in Fig. 4;.

The brake mechanism Gr, previously mentioned and illustrated in detail in Figs. 2 and 3, is arranged as follows: The gypsy-drum G is secured on a shaft G journaled in suitable bearings on a frame G", and on the said shaft is secured a brake-wheel G, engaged at opposite sides by brake-blocks O and O,attached to frames P and P, mounted to slide on the frame (jr so that when the frames are moved toward each other the brake-blocks O and O firmly brake the brake-wheel G. In order to give this movement to the frames P and P, the frame P is provided with a transverse bar P through which extends a rod R, having one end threaded for a hand-wheel R to screw on and abut against the crosspiece P The other end of the rod R is pivotally con nected with an arm R secured on a shaft R journaled in the upper end of the frame P, and the said shaft R is provided with upwardly-extending arms R connected by links H with the upper end of the frame P. By screwing up the hand-wheel R on the threaded end of the rod R the latter is caused to move from the right to the left, so that a swinging motion is given to the arm R to turn the shaft R which by the arms R* and links R pulls on the frame P to draw the latter toward the frame P, thus causing the brake-blocks O and O to firmly engage the peripheral face of the brake-wheel Gr to brake the same, and cons quently the shaft G and the gypsy-drum (1. On turning the hand-wheel R in an opposite direction the brake-blocks O and O correspondingly release the brake-wheel G The device is used as follows: At the landing or the upper end of the chute or skid-road D the ends of the cablesB and O are connected with the logs, as previously described, and then a signal is given in any suitable mannerto the engineer in charge of the donkeyengine to start the drum E for winding up the pull-cable B and for allowing the cable C to unwind from the drum E. When this takes place, the pull-cable B pulls the logs on the skid-road from the landing, and when the logs pass down a steep portion of the chute or skid-road then the operator in charge of the hand-wheel R manipulates the latter to brake the gypsy-drum Gr, so that the holdback-cable C prevents'the logs from traveling too fast down the steep portion of the skid-roadthat is, the holdback-cable holds the logs back for the latter to travel at a desired rate of speed when traveling down the steepest portion of the skid-road. When the logs again come to a level portion, or even an upgrade in \the skid-road, then the operator in charge of the brake mechanism releases the grip on the brake-wheel Gr to permit the pull-cable B to easily pull the logs along the level or upgrade portion until the logs again pass to a steep portion in the road, at which time the brake mechanism again is set in action and the abovedescribed operation is repeated until the logs have safely reached the lower end of the skidroad adjacent to the donkey-engine brake mechanism located near the watercourse. The grips I and K for the pull-back cable C are now disconnected from the logs and also the grip L for the pull-cable B, and then the end of the latter is connected with the rear end of the logs and the donkey-engine is started to wind up the cable B on the drumEfor the cable to push the logs down into the watercourse. 'When this has been done, the ends of the cables C and B are connected together by their links B, B and C, as illustrated in Fig. 6, and then the donkey-engine is reversed for the drum E to wind up the holdback-cable C and for the drum E to unwind the pullcable B, so that the coupled ends of the cables B and C travel up the chute or skid-road. back to the landing, at which point the cables are uncoupled and connected to another set of logs in the manner above described.

Having thus described my invention,I claim as new and desire to secure by Letters Patent- 1. A logging device provided with a pullcable arranged for connection with a log, for pulling the latter, and a holdback-cable arranged for connection with the log and for holding the log back, and a brake mechanism for the holdback-cable, as set forth.

2. A logging device provided with a pullcable arranged for connection with a log, for pulling the latter ,a holdback-cable arranged for connection with the log for holding the 1 log back, means for winding and unwinding the said cables, and a brake mechanism for the holdback-cable, as set forth.

3. A logging device comprising a pull-cable for connection with a log at the forward end, 1 5 a holdback-cable for connection with the log at the rear end, drums for winding up one of the cables while unwinding the other, a guide for the holdback-cable, located at the starting-point for the logs, and a brake mechanism I I C for the said holdback-cable, as set forth.

4. A logging device for moving logs over a log-chute, comprising a pull-cable, a drum for winding up and unwinding one end of the said cable, a head-grip for connecting the I 15 other end of the cable with the forward end of the log, a holdback-cable, a drum for winding and unwinding one end of the said holdback-cable,a tail-grip connected with the other end of the holdback-cable, for connection with I M the rear end .of the log, a guide for the said holdback-cable, located at the starting-point of the road, and a brake mechanism for the said holdback-cable, as set forth.

5. A logging device for moving logs over a 1 5 log-chute, comprising a pull-cable for connection with a log at the forward end, a holdback-cable for connection with a log at the rear end, drums for winding up one of the cables while unwinding the other, the drums 13 being located adjacent to the lower end of the chute, and a brake mechanism for the holdback-cable, including a brake-wheel on the shaft of the holdback-cable drum, and brakeblocks for engaging the brake-wheeL as set forth.

6. A logging device provided with a holdback-cable, a tail-grip carrying a clamp, for

engaging the said holdback-cable, and a safetygrip connected with. the terminal of the said J holdback-cable, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two sub- 

